Core Insights - The report explores the construction and application of a style factor system for A-shares, focusing on four dimensions: market capitalization, valuation, profitability, and momentum [2][9][12] - A-shares have exhibited different dominant factors over various periods, with profitability leading from 2013 to 2014, small-cap factors from 2015 to 2016, valuation from 2016 to 2018, and a return to profitability dominance from 2019 to early 2021 [2][24][27] - The report predicts a resurgence of high valuation factors starting in 2025, driven by expectations of weak profit recovery and strong policy support [2][27] Style Factor Construction and Performance - The style factor system is constructed using a bottom-up approach, assigning style labels to each stock based on their factor indicators [9][12] - The performance of the style factors shows that small-cap stocks have generally outperformed large-cap stocks since 2010, with a notable fivefold return from small-cap strategies [12][17] - Valuation factors indicate that low valuation styles have been particularly strong, especially during specific periods such as 2017-2018 and 2022-2024 [14][15] Influencing Factors of Style Factors - Profitability factors are highly correlated with economic cycles, showing better performance during economic upturns [45][46] - Valuation factors are closely linked to market sentiment, with high valuation stocks performing better during periods of positive sentiment [49][50] - Market capitalization factors are significantly influenced by remaining liquidity, with small-cap factors performing strongly in liquidity-rich environments [53][54] Application of Style Factor System - The report establishes an A-share style investment system based on the identified style factors, suggesting that the current dominant styles are high profitability, high valuation, and small-cap [2][27] - The analysis indicates that the A-share market has not fully priced in the expected profit recovery, suggesting potential upside for high profitability and high valuation factors [2][27] - Different asset types exhibit varying dominant style factors, with emerging growth assets showing significant small-cap advantages and dividend assets reflecting low valuation strengths [29][33]

Valuation Factors - The report identifies that the EP, BP, and SP factors show strong predictive capabilities across different sample pools, while the PEG factor performs poorly [1][6][10] - The EP factor demonstrates significant returns, with notable performance across various industries, particularly in manufacturing [1][40] - The BP factor excels in asset-heavy industries such as utilities and finance, while the SP factor performs well in the TMT sector [1][40] Sources of Returns - The report states that the mispricing between valuation and fundamentals is the source of returns from valuation factors, with significant positive returns from low valuation-strong fundamentals combinations and negative returns from high valuation-weak fundamentals combinations [2][41][46] Long-term Effectiveness - Valuation factors are noted to be effective in the A-share market, although there is a potential for diminishing returns as the market becomes more institutionalized [3][59][75] - Historical data shows that the selected portfolios based on valuation factors achieved annualized returns of 14.87% in the CSI 800 and 19.11% in the CSI 1000, indicating the long-term effectiveness of these strategies [4][11] Industry Performance - The report highlights that the performance of valuation factors varies significantly across different industries, with the EP factor generally performing well across most sectors [40][41] - The BP factor shows strong performance in heavy asset industries, while the SP factor is particularly effective in the TMT sector [40][41] Investment Strategy - The report suggests constructing investment portfolios based on the mispricing of valuation and fundamentals, utilizing factors such as BP, EP, net profit growth rate, and ROE for selection [4][41][75] - The strategy emphasizes the importance of identifying undervalued stocks with strong fundamentals to achieve superior returns [7][75]